DC power versus AC power

Stephen Sprunk ssprunk at cisco.com
Mon Dec 30 03:16:39 UTC 2002

Thus spake "Wayne Bogan" <wbogan at InfoAve.Net>
> For those AC only powered units, you can also purchase an invertor for DC
> AC conversion.  You would then have the advantages of DC for your AC
> equipment.  This does, however, add the potential of another point of
> failure such as fuses or breakers in the invertor.

Well, that's how AC UPS's work -- just beware what percentage of the input
current is lost in the conversion from DC to AC, plus what is lost
converting from AC back to DC inside the equipment.  Much simpler to specify
DC equipment to begin with if you really care about availability.


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